Shells to say for how long, before, one day it lasted


It seemed unique, with a palm-cover, and formed extensive reefs, such as those of today’s coral reefs. Then, when the Chicxulub meteor was to prepare you for the life of the dinosaurs, in the end, it was you…. The mortal Remains of “His” and most of the shells are to be found today, for example, in the mountainous region of Oman, once the shellfish in the shallow seas inhabited, with a summer water temperature of 40 degrees celsius.

By looking at the shell in a single shell, there are the researchers in Togo in Winter, and at the Free University of Brussels, it now counts how many days a year in the Cretaceous period, they had it. Thus, the earth turned into a long orbit around the sun, with a total of 372 times on its own axis, and not, as today, some 365 times. Of the day within half an hour it was so short.

It to accurately measure, because the shell Here is so rapidly increasing that the chemical composition is changed four times during the day. As Winter and colleagues in the journal “Paleo Oceanography and Palaeoclimatology,” you write it, they shot it with a Laser point-wise minimum of the quantities of the samples from the shell of the fossil remains of the specimen and have it analyzed for the release of substances that are chemically. The shell of the structure were changed in the course of the day, it’s relatively light and a bit weak on the seasons of the year. In the shell, preserved in its nine years of his life in the Form of a “day of struggle”.

While many have gone on to live bivalve molluscs obtain their food by Filtering the water of the sea, who lived Here, probably in a symbiotic relationship with the organisms photosynthetic. The ebb and flood of the changing light conditions in the water, and, therefore, the metabolism of the symbiont, which will, in the end, in the material of the shell on the bottom.